/* Framed sheet: the chapter tree and selected knowledge point share one surface.
   At 1440px, the available canvas divides into 300px tree + remaining detail. */
.shell:has(.knowledge-workspace) .main{background:#f3f6f8}
.knowledge-workspace{--kw-ink:#253b50;--kw-muted:#5f7283;--kw-line:#e1e7ed;--kw-accent:#315f80;color:var(--kw-ink)}
.knowledge-workspace .knowledge-heading{margin:4px 0 22px;align-items:center;gap:20px}
.knowledge-workspace .knowledge-heading h2{font-size:24px;font-weight:650;margin:0;line-height:1.5}
.knowledge-workspace .knowledge-heading p{font-size:14px;margin:5px 0 0;color:var(--kw-muted)}
.knowledge-workspace .btn{box-shadow:none;border-radius:6px;font-size:13px;min-height:36px}
.knowledge-workspace .knowledge-heading>.btn{background:var(--kw-accent);border-color:var(--kw-accent);padding:9px 16px;white-space:nowrap}
.knowledge-workspace .knowledge-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:0;align-items:stretch;border:1px solid var(--kw-line);border-radius:12px;overflow:hidden;background:#fff;min-height:650px}
.knowledge-workspace .knowledge-tree{background:#f8fafb;border:0;border-right:1px solid var(--kw-line);border-radius:0;padding:22px 16px;min-width:0}
.knowledge-workspace .knowledge-subjects{display:block;margin:0 0 20px;padding:0 4px 20px;border-bottom:1px solid var(--kw-line)}
.knowledge-workspace .knowledge-subjects>label{display:block;font-size:13px;font-weight:500;color:var(--kw-muted);margin-bottom:8px}
.knowledge-workspace .knowledge-subjects>select{width:100%;height:40px;border:1px solid #c9d4dd;border-radius:6px;background:#fff;color:var(--kw-ink);font:inherit;font-size:15px;font-weight:600;padding:8px 12px}
.knowledge-workspace .knowledge-subject-actions{display:flex;gap:16px;margin-top:8px}
.knowledge-workspace .knowledge-subject-actions .btn{background:none;border:0;padding:4px 0;min-height:30px;color:var(--kw-accent);font-size:13px}
.knowledge-tree-caption{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--kw-muted);padding:0 8px;margin:0 0 12px}
.knowledge-workspace .knowledge-branch{margin:4px 0 12px}
.knowledge-workspace .knowledge-chapter-row{border-radius:6px}
.knowledge-workspace .knowledge-chapter-row.active{background:#e9eff3}
.knowledge-workspace .knowledge-chapter-row .btn{color:var(--kw-ink);font-size:14px;padding-top:10px;padding-bottom:10px;line-height:1.6}
.knowledge-workspace .knowledge-chapter-row [data-knowledge=chapter] span{font-weight:600}
.knowledge-workspace .knowledge-chapter-row [data-knowledge=new-child]{font-size:20px;color:var(--kw-accent)}
.knowledge-workspace .knowledge-chapter-tools{padding-left:26px;gap:10px}
.knowledge-workspace .knowledge-chapter-tools .btn{font-size:13px;padding:4px 2px;min-height:28px;color:var(--kw-muted)}
.knowledge-workspace .knowledge-children{margin-left:18px;padding-left:9px;border-color:#dbe3e9}
.knowledge-workspace .knowledge-children .btn{font-size:13px;padding:9px 10px;color:var(--kw-muted);border-radius:5px;line-height:1.6}
.knowledge-workspace .knowledge-children .btn[aria-current=page]{background:#e4edf3;color:#285371;font-weight:550}
.knowledge-workspace .knowledge-children .btn[data-knowledge=new-child]{color:var(--kw-accent);font-size:13px}
.knowledge-workspace .knowledge-content{display:block;padding:26px 28px;min-width:0}
.knowledge-workspace .knowledge-content .card{padding:0;border:0;border-radius:0;box-shadow:none;background:#fff;margin:0}
.knowledge-workspace .knowledge-detail-title{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}
.knowledge-workspace .knowledge-detail-title p{font-size:13px;color:var(--kw-muted);margin-bottom:9px}
.knowledge-workspace .knowledge-detail-title h2{font-size:23px;font-weight:600;line-height:1.5}
.knowledge-workspace .knowledge-detail-title .pill{border-radius:4px;font-weight:400;font-size:13px;white-space:nowrap;background:#f1f4f6;color:#596f80;padding:4px 8px}
.knowledge-workspace .knowledge-point-tools{margin-top:14px;gap:10px}
.knowledge-workspace .knowledge-point-tools .btn{min-height:32px;padding:5px 10px;font-size:13px}
.knowledge-workspace .knowledge-counts{border-top:1px solid var(--kw-line);margin:24px 0 12px;padding-top:20px;gap:22px;color:var(--kw-muted);font-size:13px}
.knowledge-workspace .knowledge-counts b{font-size:21px;font-weight:500;color:var(--kw-ink);font-variant-numeric:tabular-nums}
.knowledge-workspace .knowledge-counts small{color:var(--kw-muted)}
.knowledge-workspace .knowledge-stars{gap:0;border:1px solid var(--kw-line);border-radius:8px;overflow:hidden;margin-top:16px}
.knowledge-workspace .knowledge-stars button{background:#fff;border:0;border-right:1px solid var(--kw-line);border-radius:0;padding:18px 4px;gap:8px;color:var(--kw-muted)}
.knowledge-workspace .knowledge-stars button:last-child{border:0}
.knowledge-workspace .knowledge-stars button:hover{background:#f3f7fa}
.knowledge-workspace .knowledge-stars b{font-size:22px;font-weight:500;font-variant-numeric:tabular-nums;color:var(--kw-ink)}
.knowledge-workspace .knowledge-stars small{font-size:13px;color:var(--kw-muted)}
.knowledge-workspace .knowledge-stars .missing>span:last-child{color:#8b672d}
.knowledge-workspace .knowledge-readiness{margin-top:16px;padding:12px 14px;border:0;border-radius:6px;background:#f6f7f9;color:var(--kw-muted);font-size:13px}
.knowledge-workspace .knowledge-readiness.ready{background:#f0f7f4;color:#427261}
.knowledge-workspace .knowledge-actions{margin:20px 0 24px;gap:8px}
.knowledge-workspace .knowledge-actions .btn{font-size:13px;padding:7px 11px;color:var(--kw-ink);background:#fff;border-color:#d7e0e8}
.knowledge-workspace .knowledge-actions [data-knowledge=questions]{background:var(--kw-accent);border-color:var(--kw-accent);color:#fff}
.knowledge-workspace .knowledge-content .knowledge-courses{border-top:1px solid var(--kw-line);padding-top:20px}
.knowledge-workspace .knowledge-courses summary{font-size:14px;font-weight:550;color:var(--kw-ink);cursor:pointer}
.knowledge-workspace .knowledge-courses .knowledge-course-heading{margin-top:18px}
.knowledge-workspace .knowledge-course-heading h3{font-size:16px}
.knowledge-workspace .knowledge-secondary{border-color:var(--kw-line);margin-top:24px}
.knowledge-workspace .knowledge-tree .knowledge-secondary .btn{font-size:13px;color:var(--kw-muted)}
.knowledge-workspace .knowledge-content .knowledge-blank{padding:50px 20px!important;background:#fff}
.knowledge-workspace .knowledge-blank-icon{background:none;color:#52768f;padding:0;border-radius:0}
.knowledge-workspace .knowledge-blank h2{font-size:22px}
.knowledge-workspace .knowledge-blank p{color:var(--kw-muted);font-size:14px;max-width:440px;margin:12px auto 24px}
.cl-hierarchy{display:flex;gap:16px;padding:16px 28px;background:#f8fafb;border-bottom:1px solid #e1e7ed;flex-shrink:0}
#modal .cl-hierarchy label{display:grid;gap:6px;flex:1;min-width:0;margin:0;font-size:13px;color:#536577}
#modal .cl-hierarchy select{font-size:13px;width:100%;min-width:0}
@media(max-width:1100px){.knowledge-workspace .knowledge-layout{grid-template-columns:250px minmax(0,1fr)}.knowledge-workspace .knowledge-content{padding:22px 20px}.knowledge-workspace .knowledge-detail-title{flex-wrap:wrap;gap:10px}.knowledge-workspace .knowledge-stars{grid-template-columns:repeat(3,minmax(0,1fr))}.knowledge-workspace .knowledge-stars button:nth-child(-n+3){border-bottom:1px solid var(--kw-line)}.knowledge-workspace .knowledge-stars button:nth-child(3n){border-right:0}}
@media(max-width:700px){.knowledge-workspace .knowledge-layout{grid-template-columns:1fr}.knowledge-workspace .knowledge-tree{border-right:0;border-bottom:1px solid var(--kw-line)}.knowledge-workspace .knowledge-heading{align-items:flex-start}.knowledge-workspace .knowledge-heading h2{font-size:21px}.knowledge-workspace .knowledge-heading p{font-size:13px}.knowledge-workspace .knowledge-tree nav{max-height:280px}.cl-hierarchy{padding:12px 18px;gap:8px;flex-wrap:wrap}#modal .cl-hierarchy label{flex-basis:40%}#modal .cl-hierarchy label:last-child:nth-child(3){flex-basis:100%}}
.bank-scope{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:18px 0;padding-bottom:18px;border-bottom:1px solid #e1e7ed}
.bank-scope label{display:grid;gap:7px;font-size:13px;color:#5f7283;min-width:0}
.bank-scope select{width:100%;min-width:0;height:38px;background:#fff;border:1px solid #cad5de;border-radius:6px;padding:7px 10px;color:#253b50;font-size:14px}
@media(max-width:700px){.bank-scope{grid-template-columns:1fr;gap:10px}}

.knowledge-workspace .knowledge-courses p,.knowledge-workspace .knowledge-courses .empty{color:var(--kw-muted)}
.knowledge-workspace .knowledge-subjects>select{min-width:0;max-width:100%;box-sizing:border-box}
@media(min-width:701px) and (max-width:900px){.shell:has(.knowledge-workspace) .side .release-badge{flex-shrink:0;white-space:nowrap}.shell:has(.knowledge-workspace) .side{align-items:center}}
/* Keep hierarchy controls inside their grid columns at tablet widths. */
#modal .cl-workspace .teacher-select{min-width:0!important;max-width:100%;overflow:hidden;text-overflow:ellipsis}
#modal .cl-hierarchy .teacher-select{width:100%;display:block;padding-right:28px;position:relative}
#modal .cl-hierarchy .teacher-select:after{position:absolute;right:12px;top:50%;margin-top:-4px}
.catalog-drag-hint{display:block;font-size:11px;font-weight:400;color:#7b8ea2;margin-top:3px}.knowledge-chapter-row[draggable=true],[data-knowledge=point][draggable=true]{cursor:grab}.knowledge-chapter-row[draggable=true]:active,[data-knowledge=point][draggable=true]:active{cursor:grabbing}.catalog-dragging{opacity:.5}.catalog-drop-before{box-shadow:0 -3px 0 #2785d6!important}.catalog-drop-after{box-shadow:0 3px 0 #2785d6!important}.knowledge-workspace[aria-busy=true] [draggable]{cursor:progress}